Best Environment Companies in Copenhagen, Denmark
The 41 best Environment companies in Copenhagen, Denmark in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Cadeler.
Our analysis of 309 Environment companies
$75.8b in tracked funding; 79% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Environment companies in Copenhagen
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Cadeler Provider of wind operation and maintenance services | $92M | 30 mo ago | Public | — | 2008 | Craft CMSApple iCloud MailMicrosoft 365+19 | — | — |
| 2 | Saltfoss Developer of compact molten salt reactors deployed on power barges | $22M | 46 mo ago | Seed | Andreas Schofield Co-Founder & CTO | 2014 | WordPressApple iCloud MailMicrosoft 365+21 | — | 1 launch |
| 3 | Seaborg Developer of floating nuclear power plants | $22M | 46 mo ago | Funding Raised | Klaus Nyengaard CEO | 2014 | — | — | — |
| 4 | RGS Nordic Provider of industrial water and waste recycle solutions | $16M | 120 mo ago | Acquired | — | 1991 | WordPressApple iCloud MailMicrosoft 365+34 | 3 patents Soil stabilization and ground improvement methods for construction site preparation. | — |
| 5 | INFUSER Developer of air purification systems | $13M | 84 mo ago | Deadpooled | Lars Nygaard Jepsen Co-Founder & COO | 2012 | — | — | — |
| 6 | Reel Developer of solar and wind energy projects | $8M | 3 mo ago | Series A | Anders Meldgaard Co-Founder & CCO | 2020 | Framer SitesReactPriority Hints+8 | — | — |
| 7 | GreenGo Energy Renewable energy company | $2M | 130 mo ago | Seed | — | 2009 | Cart FunctionalitySquarespace CommerceSquarespace+15 | — | — |
| 8 | Hofor Utility providing water, gas, heating and energy to consumers | $305K | 116 mo ago | Public | — | 2012 | WordPressApple iCloud MailMicrosoft 365+25 | — | 1 expansion · 1 award |
| 9 | Ea Energy Analyses Provider of waste management services | $177K | 119 mo ago | Funding Raised | — | 2005 | WordPress Block EditorWordPressMySQL+11 | — | — |
| 10 | CTCN Provider of climate change and environment programming services | $157K | 84 mo ago | Funding Raised | — | 2013 | DrupalPHPHighcharts+8 | — | 1 partnership · 2 awards |
Top 12 Environment companies in Copenhagen
#1
Series A · Copenhagen, Capital Region of Denmark · founded 2020 · 7 employees$7.9Mraised▾
Developer of solar and wind energy projects
- May 2026Series A$17.6M
- Dec 2023Series A$5.4M
- Jun 2022Seed$2.4M
#2
Public · Copenhagen, Capital Region of Denmark · founded 2008 · 70 employees$92.2Mraised▾
Provider of wind operation and maintenance services
- Feb 2024Post IPO—
- Apr 2021Post IPO$92.2M
#3
Seed · Copenhagen, Capital Region of Denmark · founded 2014$21.8Mraised▾
Developer of compact molten salt reactors deployed on power barges. The company focuses on creating a next-generation nuclear reactor that is safe and environmentally conscious. The reactor design incorporates liquid salt as a coolant, which ensures continuous cooling and prevents meltdowns. This approach reduces complexity and cost compared to conventional nuclear reactors. The company aims to make nuclear energy inexpensive, sustainable, and safe.
- Oct 2022Grant (prize money)—
- Oct 2021Seed$21.8M
- Apr 2018Seed—
- Mar 2017Grant (prize money)—
#4
Funding Raised · Copenhagen, Capital Region of Denmark · founded 2014 · 115 employees$21.8Mraised▾
Developer of floating nuclear power plants
#5
Deadpooled · Copenhagen, Capital Region of Denmark · founded 2012 · 21 employees$12.6Mraised▾
Infuser develops air purification systems for residential and commercial applications. Products include Climatic for industries, Domisphere for buildings, Sterisafe indoor automated disinfection systems and Compact Plug-and-Play solutions. Removes particulate matter (PM 2.5 & PM 10) and gases in the indoor air climate. Recipient of the Copenhagen Business Award in 2016.
- Sep 2019Series A$1.6M
- Nov 2017Series A$296.2K
- Nov 2016Series A$2M
- Mar 2016Series A$1.7M
#6
Acquired · Copenhagen, Capital Region of Denmark · founded 1991 · 1957 employees$16.2Mraised▾
Provider of industrial water and waste recycle solutions
#7
Seed · Copenhagen, Capital Region of Denmark · founded 2009 · 100 employees$2.2Mraised▾
GreenGo Energy is a decentralized energy company, which supplies renewable energy directly to customers from a solar power plant on the roof of their buildings. The company offers two distinct products, one is a no-cost down PPA-based solar contract for commercial and industrial power consumers, where the user pays the company based on the actual power usage on the basis of a long-term PPA. The other product is an investment platform for large businesses and real estate investment funds to receive steady revenue by investing in high-yielding GreenGo solar power plants on top of their portfolio of buildings.
- Oct 2015Seed$2.2M
#8
Public · Copenhagen, Capital Region of Denmark · founded 2012 · 1609 employees$305.3Kraised▾
Hofor is a large corporation also known as the Greater Copenhagen Utility with business operations in multiple domains such as water, sewage, heating, power and city gas distribution. The company also has nearly 40 MW onshore wind turbines constructed and is targeting a total capacity of approximately 360 MW by 2025.
- Jan 2017Grant (prize money)$305.3K
#9
Funding Raised · Copenhagen, Capital Region of Denmark · founded 2013 · 158 employees$156.8Kraised▾
The Climate Technology Centre and Network (CTCN) facilitates connections between countries and climate technology solutions to expedite climate change initiatives. hosted by the UN Environment, the CTCN is the implementation arm of the Technology Mechanism of the United Nations Framework Convention on Climate Change.
- Sep 2019Grant (prize money)$156.8K
#10
Funding Raised · Copenhagen, Capital Region of Denmark · founded 2005 · 50 employees$177Kraised▾
Provider of waste management services
- Oct 2016Grant (prize money)$177K
#11
Seed · Copenhagen, Capital Region of Denmark · founded 2021 · 4 employees—raised▾
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- 2022Seed—
#12
Acquired · Copenhagen, Capital Region of Denmark · founded 1945 · 1959 employees—raised▾
Provider of real estate design and engineering consultancy services
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Environment coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
What Copenhagen researches in environmental monitoring
- University of Copenhagen23
- IT University of Copenhagen3
- Copenhagen University Hospital1
- Copenhagen Prospective Studies on Asthma in Childhood1
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.